Gurudwara Bangla Sahib is one of the most prominent Sikh gurdwara, or Sikh house of worship, in Delhi, and the pond inside its complex, known as the "Sarovar", whose water is considered holy by Sikhs and is known as "Amrit". It was built by Sikh General, Sardar Bhagel Singh in 1783, who supervised the construction of nine Sikh shrines in Delhi in the same year, during the reign of Mughal Emperor. It is situated in the heart of New Delhi’s Cannaught Place area. It is located on the east side intersection of Ashok Road and Baba Kharag Singh Marg. Gurdwara Bangla Sahib was originally a bungalow belonging to Raja Jai Singh, an Indian ruler in the seventeenth century, and was known as Jaisinghpura Palace. The eighth Sikh Guru, Guru Har Krishan resided here during his stay in Delhi in 1664. During that time, there was a smallpox and cholera epidemic, and Guru Har Krishan helped the suffering by giving aid and fresh water from the well at this house. Soon he too contracted the illness and eventually died on March 30, 1664. A small tank was later constructed by Raja Jai Singh over the well, its water is now revered as having healing properties and is taken by Sikhs throughout the world back to their homes.